103. The four pillar industries, namely trading and logistics, financial services, business and professional services, and tourism, have been the engines powering Hong Kong’s economic development for years. In 2010, the four industries brought about a total value added of almost $1,000 billion and made a contribution of 58 per cent to GDP, which represented an increase of nearly 15 per cent over the previous year. They employed nearly 1.7 million people in the year.